The Ricci flow approach to homogeneous Einstein metrics on flag manifolds

Details The Ricci flow approach to homogeneous Einstein metrics on flag manifolds The Ricci flow approach to homogeneous Einstein metrics on flag manifolds

2010-10-17

arxiv.org/abs/1010.3426v1

J.Geom.Phys.61:1587-1600,2011

Mathematics

Differential Geometry

17 pages, 2 figures

Scientific paper

10.1016/j.geomphys.2011.03.013

We give the global picture of the normalized Ricci flow on generalized flag manifolds with two or three isotropy summands. The normalized Ricci flow for these spaces descents to a parameter depending system of two or three ordinary differential equations, respectively. We present here the qualitative study of these system's global phase portrait, by using techniques of Dynamical Systems theory. This study allows us to draw conclusions about the existence and the analytical form of invariant Einstein metrics on such manifolds, and seems to offer a better insight to the classification problem of invariant Einstein metrics on compact homogeneous spaces.

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